40fd0a5e81ebdcf0ec82a4710a12dec1
Used by many programs on OSX,apple.WebKit.Networking
JA3 entry
This is a JA3 — a single MD5 over the ClientHello's version, ciphers, extensions, curves and point formats. There is nothing to decode: the hash discards the structure it was computed from. That is the limitation JA4 was designed around.